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Atomic Structure of Americium and Technetium


Atomic Structure of Technetium and Americium


Atomic Properties

Atomic Number
95   
23
43   
99+

Electron Configuration
[Rn] 5f7 7s2   
[Kr] 4d5 5s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100   
HCP-Crystal-Structure-of-Technetium.jpg#100   

Atom
  
  

Number of Protons
95   
23
43   
99+

Number of Neutrons
148   
12
55   
99+

Number of Electrons
95   
23
43   
99+

Radius of an Atom
  
  

Atomic Radius
173.00 pm   
21
136.00 pm   
99+

Covalent Radius
180.00 pm   
21
147.00 pm   
37

Van der Waals Radius
244.00 pm   
10
200.00 pm   
28

Atomic Weight
243.00 amu   
20
98.00 amu   
99+

Atomic Volume
17.86 cm3/mol   
29
8.50 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Plutonium
  
Molybdenum
  

Next Element
Curium
  
Ruthenium
  

Valence Electron Potential
44.00 (-eV)   
40
180.00 (-eV)   
3

Lattice Constant
346.81 pm   
99+
273.50 pm   
99+

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
Not Available   
1.60   
5

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